Pump



JACOB A. s/v /Dm Sept. 2 1924;

Clttowm,

Patented sept. 2, 19'24.

UNITED STATES .PATENT OFFICE.

JACOB SNIDER, OF DAYTON, OHIO, ASSIG-NOR TO THE UNIFLOW PUMP @a MANU- FACTURING CO'MPANY, 4OIE DAYTON, OHIO, A CORPORATION OF OHIO.

PUMP.

Application filed Augustv26, 1921. Serial No..495,621.

To all whom t may concer/n.: l

Be lit known that I, JACOB A. SNIDER,

' a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Pumps, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates .to pumps and more particularly that type of pump commonly employed in connection with domestic water systems, 'although it has a much wider lield of utility than domestic systems.

One object of the invention is to provide a pump of this character having a very high efciency and capable of lifting water y a relatively great distance.`

A further object of the invention is to provide a pump" of this character which will operate very quietly.

A further object of the invention is to provide a pump of this character which can be very easily assembled and in which the valves are readily' accessible for the purpose of cleaning or repairing the same.`

Other objects of the invention will appear as theV device is described in detail.

In the accompanying drawings Fig. 1 is a longitudinal vertical section taken centrally of a pump embodying my invention; F ig. 2 is a section taken on the line 2-2 of F ig. l; Fig. 3 is a section taken on the line 3 3 of Fig. 1; and Fig. 4 is a detail plan view of one of the valves.

In these drawings I have illustrated one embodiment of my invention and have shown the same as comprising a housing consisting of a body portion 1 having at its lower edges flanges 2 to which is removably secured a lower portion 3 forming a suction chamber and provided with an inlet port 4. The body portion 1 is also provided at its upper edges with lianges 5 to which is detachably secured an upper portion, or cap, 6 forming a discharge chamber and provided with an outlet opening 7. The discharge chamber is also preferably provided with an air chamber 8. Mounted within the body portion of the housing is a cylinder 9 which in thel present instance is arranged horizontally and has mounted therein a piston 10,.the piston rod 11 of which extends throu h a stuiiing box 12 in one ofthe end wa s of the housing and is -adaptedto be connected with a motor or other suitable operating mechanism. The body portion of the housing is provided at the respective ends of the cylinder 9 with passageways 13 extending transversely thereof, communicatin with the respective ends of the cylinder an adapted to connect the same with the suction chamber and the discharge chamber.

These passageways are preferably of a relatively small size, which, while ample to permit the ilow of the water to and from the cylinder reduces the clearance to such an extent that the piston on its discharge stroke will expel practically all the air from the passageway and will, therefore, on the suction stroke produce practically a`maximum suction. In order toreduce the passageways to the desired size the endwalls of the body portion of the housing have in- Wardly extending portions 14 which terminate short distances from the respective ends of the cylinder 9 and the side walls of the body portion are contracted above and below the cylinder, as shown in Fig. 2, to further reduce the size of the passageway. The passageways 13 are enlarged at their lower ends, as shown at 15, to receive suction valves 16, which are mounted on the lower portion y3 of the housing so as to be re-v movable therewith and are arranged directly beneath the respective ends of the cylinders and in line with the respective passageways 13. rlhe upper ends of the passageways are also enlarged, as shown at 17, to receive the lower portions of discharge valves 18 which are mounted on the body portion of the housin and extend upwardly into the discharge c amberl of the cap 6 and are arranged directly above the respective ends of the cylinder and in line with the respective passageways 13. It will be apparent, therefore, that the water flowing from the suction chamber to the discharge chamber will travel in one direction only, that is, it will flow about the suction valve into the cylinder and thence directly through the discharge valve so that it does not reverse the direction of its movementV and in its complete movement through the pump makes but few turns. As a result of the movement of the` water in one direction the pump may -be operated at a high speed and will operate very quietly, the shock. which would be caused by the are removed stopping and starting of the liquid in reversing the direction of its iow being wholly eliminated. Further, the arrangement of the valves and the construction of the passageways are such that the clearance at the ends of the cylinder are reduced to a minimum which is just suiiicient for the free passage of the water. Consequently, practically all air will be expelled from the passageway upon the discharge stroke of the pistou and ,a very powerful suction will be created upon the suction stroke of the piston. The outer end wall of the housing is provided with a cylinder to permit access thereto and this bore is normally closed by a plug 19 screw threaded into the end wall and terminating substantially Hush with the inwardly eX- tending portion of the end wall. An air valve 20 is mounted in the removable lower portion 3 of the housing and communicates with one of the passageways 13 to admit to the pump a limited amount of air which will be forced into the storage receptacle to maintain a 'proper air pressure therein. It will further be apparent that because of the arrangement of the valves and the construction of the housing the valves are readily accessible. The suction valves are carried by the lower portion ofthe housing and when this is removed the valves with it so that they are wholly accessible for cleaning or repairing. The discharge valves being mounted on the to-p wall of the body portion, can be reached by merely removing the cap 6. The whole construction is extremely simple, very compact, and is vhighly eliicient in its o eration and will operate with considera ly less power than is usually required to operate pumps of a similar or even a smaller capacity.

bore in line with the' While I have shown and described one embodiment of my invention I wish it to be understood that Ido not desire to be limited to the details thereof as various modifications may occur to a person skilled in the art.

Having now fully described my invention what I claim as new and desire to secure by Letters Patent, is:

1. In a pump, a housing, a cylinder mounted in said housing, a piston mounted in said cylinder, said housing having a suction chamber beneath said cylinder, and a discharge chamber above said cylinder, the walls of said housing having portions extending inwardly at the respective ends of said cylinder to form relatively small passageways about the ends of said cylinders, which passageways communicate with said suction chamber and said discharge chamber, and valves to control said communication.

2. In a pump, a housing, a cylinder mounted in Said housing, a piston mounted in said cylinder, said housing having a suction chamber beneath said cylinder and a discharge chamber above said'cylinder, the walls of said housing having portions extending inwardly at the respective ends of said cylinder to form relativelyY small transverse passageways connecting the respective ends of said cylinder with said suction chamber and with said discharge chamber. and having enlarged end portions, and valves arranged in the enlarged portions of said passageways to control the communication between the same and the respective chambers.

In testimony whereof, I aiix my signature hereto.

JACOB A. SNIDER.

Cil 

